#include<iostream>
using namespace std;
class item
{
	double data;
public:
	item() :data(0.0)
	{
	}
		void setdata(double value)
		{
			data = value;
		}
		double getdata()const
		{
			return data;
		}
		void printdata()
		{
			cout << data;
		}
	

};
